xloader | 39aff459babaf4488ea90b5e81e463044d4ad3b8a17a3bfcb247725a288db025

General

Target

PO0932083943974.exe
Size

450KB
MD5

cc034757c9d872b0a95e4a67967e50ac
SHA1

607ec4ab698dffdd9b0546f3a030a88fdd6ce8b7
SHA256

0047270c26f603d132bc8e6a67894311356fe2d3c977aa287a09a8261f6b5690
SHA512

78cbacad75abf582651694af5edf2b1b479851f43bff1cefbd422943e4ebd232c54d0b00e58314760c47ccb1b9d9b433f1ff6686936091a7dd1929173e2638d8

Score

10^/10

xloader b6fg evasion loader persistence rat spyware stealer suricata

Malware Config

Extracted

Family

xloader

Version

2.0

Campaign

b6fg

Decoy

multlockmt5.com

mohajrannoor.com

robynhoodofretail.info

belinv.com

hotellasab.com

kibrismosad.com

xn--fxwm39aeb590h.xn--io0a7i

resetbrasil.com

tcsonhvac.com

theresav.net

bohoqi.info

machinafuturae.com

mambavault.com

xn--980am9a.top

yumiang.com

evntmonitor.com

83003kk.com

triterm.com

8800pe.com

silvanstudio.com

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4020-137-0x0000000000400000-0x0000000000427000-memory.dmp	xloader
behavioral2/memory/4020-139-0x0000000000400000-0x0000000000427000-memory.dmp	xloader
behavioral2/memory/3108-146-0x0000000000400000-0x0000000000427000-memory.dmp	xloader

Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

PO0932083943974.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	PO0932083943974.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	PO0932083943974.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cscript.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	cscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\7NRTP2CH = "C:\\Program Files (x86)\\Zdlvd5\\yf9l_g6chaxm.exe"	cscript.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

PO0932083943974.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	PO0932083943974.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	PO0932083943974.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO0932083943974.exevbc.execscript.exe

description	pid	process	target process
PID 3388 set thread context of 4020	3388	PO0932083943974.exe	vbc.exe
PID 4020 set thread context of 3128	4020	vbc.exe	Explorer.EXE
PID 3108 set thread context of 3128	3108	cscript.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cscript.exe

description ioc process

File opened for modification C:\Program Files (x86)\Zdlvd5\yf9l_g6chaxm.exe cscript.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Zdlvd5\yf9l_g6chaxm.exe	cscript.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cscript.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

Processes:

vbc.execscript.exe

pid	process
4020	vbc.exe
4020	vbc.exe
4020	vbc.exe
4020	vbc.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe
3108	cscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3128 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

vbc.execscript.exe

pid process

4020 vbc.exe
4020 vbc.exe
4020 vbc.exe
3108 cscript.exe
3108 cscript.exe
3108 cscript.exe
3108 cscript.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.execscript.exe

description pid process

Token: SeDebugPrivilege 4020 vbc.exe
Token: SeDebugPrivilege 3108 cscript.exe

pid	process
3128	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	4020	vbc.exe
Token: SeDebugPrivilege	3108	cscript.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

PO0932083943974.exeExplorer.EXEcscript.exe

description	pid	process	target process
PID 3388 wrote to memory of 4020	3388	PO0932083943974.exe	vbc.exe
PID 3388 wrote to memory of 4020	3388	PO0932083943974.exe	vbc.exe
PID 3388 wrote to memory of 4020	3388	PO0932083943974.exe	vbc.exe
PID 3388 wrote to memory of 4020	3388	PO0932083943974.exe	vbc.exe
PID 3388 wrote to memory of 4020	3388	PO0932083943974.exe	vbc.exe
PID 3388 wrote to memory of 4020	3388	PO0932083943974.exe	vbc.exe
PID 3128 wrote to memory of 3108	3128	Explorer.EXE	cscript.exe
PID 3128 wrote to memory of 3108	3128	Explorer.EXE	cscript.exe
PID 3128 wrote to memory of 3108	3128	Explorer.EXE	cscript.exe
PID 3108 wrote to memory of 4188	3108	cscript.exe	cmd.exe
PID 3108 wrote to memory of 4188	3108	cscript.exe	cmd.exe
PID 3108 wrote to memory of 4188	3108	cscript.exe	cmd.exe
PID 3108 wrote to memory of 4496	3108	cscript.exe	cmd.exe
PID 3108 wrote to memory of 4496	3108	cscript.exe	cmd.exe
PID 3108 wrote to memory of 4496	3108	cscript.exe	cmd.exe
PID 3108 wrote to memory of 1664	3108	cscript.exe	Firefox.exe
PID 3108 wrote to memory of 1664	3108	cscript.exe	Firefox.exe
PID 3108 wrote to memory of 1664	3108	cscript.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3128

C:\Users\Admin\AppData\Local\Temp\PO0932083943974.exe
"C:\Users\Admin\AppData\Local\Temp\PO0932083943974.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3388

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4020

C:\Windows\SysWOW64\cscript.exe
"C:\Windows\SysWOW64\cscript.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3108

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
PID:4188

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:4496

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1664

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Scripting

1

T1064

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

2

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
memory/3108-148-0x0000000002360000-0x00000000023EF000-memory.dmp

Filesize
572KB

Download
memory/3108-147-0x00000000025C0000-0x000000000290A000-memory.dmp

Filesize
3.3MB

Download
memory/3108-146-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/3108-145-0x0000000000A90000-0x0000000000AB7000-memory.dmp

Filesize
156KB

Download
memory/3108-143-0x0000000000000000-mapping.dmp

Download
memory/3128-142-0x00000000033A0000-0x0000000003455000-memory.dmp

Filesize
724KB

Download
memory/3128-149-0x0000000003460000-0x0000000003517000-memory.dmp

Filesize
732KB

Download
memory/3388-135-0x0000000006AC0000-0x0000000006B26000-memory.dmp

Filesize
408KB

Download
memory/3388-130-0x0000000000D40000-0x0000000000DB6000-memory.dmp

Filesize
472KB

Download
memory/3388-134-0x0000000006280000-0x000000000631C000-memory.dmp

Filesize
624KB

Download
memory/3388-133-0x0000000006530000-0x00000000066B6000-memory.dmp

Filesize
1.5MB

Download
memory/3388-132-0x00000000057C0000-0x0000000005852000-memory.dmp

Filesize
584KB

Download
memory/3388-131-0x0000000005CD0000-0x0000000006274000-memory.dmp

Filesize
5.6MB

Download
memory/4020-140-0x0000000001840000-0x0000000001B8A000-memory.dmp

Filesize
3.3MB

Download
memory/4020-141-0x00000000012D0000-0x00000000012E0000-memory.dmp

Filesize
64KB

Download
memory/4020-139-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/4020-137-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/4020-136-0x0000000000000000-mapping.dmp

Download
memory/4188-144-0x0000000000000000-mapping.dmp

Download
memory/4496-150-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads